What is 5x to the power of 2-1x to the power of 2?

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

The scatter plot graph shows the average annual income for a certain profession based on the number of years of experience which of the following is most likely to be the equation of the trend line for this set of data? a. i=5350e +37100 b. i=5350e-37100 c. i=5350e d. e=5350e+37100

Which representation has a constant of variation of -2.5